I would keep all of these projects if you want to be T5. The ability to juggle a lot of significant extra's, while maintaining the credentials you need for T5, are what makes you stand out. I also think your passion for drug policy will make you an attractive candidate at top law schools. I don't think it will hurt. Law schools look for students that they think will add meaningful perspectives to class discussions--whether the school agrees with the opinions or not. Your interest screams of this quality. Good luck, and let us know what happens.
and believe me, it would be a foolhardy endeavor to ask for advice from people who know more than me and then ignore it. haha